Here is my 2001 Saab 9-3 SE with 160,000km's on her. This is a sludge prone engine. The car has seen mostly Motul,Elf, Esso XD3 and for the last 2 years Redline since 60,000km mark. I am happy to see there are no signs of sludge even in the cracks and hard to reach places. The car is a Stage 3...